Underwater Mysteries: Unidentified Submerged Objects, Paranormal Phenomena, and Lost Cities (Unabridged)
2018
Area 51: What They Don't Want You to Know: Paranormal Activities, Book 2 (Unabridged)
2018
The Wisdom of the Amateur: How Embracing the Beginner’s Mind Unlocks Lifelong Creativity and Joy (Unabridged)
2026
Das bessere Leben - Tu es. Tu es nicht. (Gekürzt)
2015